37F. Determination of taxable income derived by persons previously assessable under certain other laws
Where it is necessary for any rule provided in this Act as to the inclusion in the income of any taxpayer for any year or as to the deduction or set–off of any amount from or against his income for such year, that regard shall be had to anything that has been done or has occurred in or in relation to a previous year of assessment, anything that has in fact been done or has in fact occurred in or in relation to a year of assessment during which the taxpayer was assessable for taxation purposes in terms of any law of a former self–governing territory declared under section 26 of the repealed Self–governing Territories Constitution Act, 1971 (Act No. 21 of 1971), to be a self–governing territory or of the former Republic of Transkei, Bophuthatswana, Venda or Ciskei for any year of assessment, shall, subject to such adjustments as may in the circumstances be appropriate, for the purposes of applying such rule be taken into account.